A suite of twelve planographic prints on T.H. Saunders mould-made paper, large variants of the series of images in the accompanying book: On Certainty by Ludwig Wittgenstein, edited by G.E.M. Anscombe and G.H. von Wright, the German text Uber Gewissheit, translated by Denis Paul and G.E.M. Anscombe, with an introduction by Arthur Danto, and with twelve illustrations by Mel Bochner; published in an edition of thirty suites, plus five artist's proofs and five printer's proofs.